ASTROSAT CZTI

Data Quality Report

Orbit 20124

Creation date: 2024-06-27T18:11:34.119243
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A05_180T01_9000002992_20124cztM0_level2.evt modeM0/AS1A05_180T01_9000002992_20124cztM0_level2_quad_clean.evt
Size (bytes)710,444,160109,774,080
Size677.5 MB 104.7 MB
Events in quadrant A4,956,210697,214
Events in quadrant B5,630,150711,884
Events in quadrant C4,585,369691,334
Events in quadrant D5,812,337677,238

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0196532
B0220112
C0184822
D0226622

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78585256.681089%
B78586027.660982%
C78582883.665055%
D78594195.331467%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 8623 7860 251 251 2.91% 3.19%
B 8623 7860 319 319 3.70% 4.06%
C 8623 7860 31 31 0.36% 0.39%
D 8624 7861 216 216 2.50% 2.75%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 14 238 1154889 5833.7 982 964 197.8
A 14 237 10688 49.16 982 964 197.8
A 13 254 8569 38.45 982 964 197.8
B 10 245 1618372 8603.21 975 951 188.0
B 0 198 42090 218.82 975 951 188.0
B 0 197 40387 209.76 975 951 188.0
C 3 233 680152 3018.33 960 967 225.0
C 14 238 151229 667.77 960 967 225.0
C 0 207 12146 49.68 960 967 225.0
D 1 52 1682907 7175.83 967 939 234.4
D 14 34 163575 693.86 967 939 234.4
D 12 218 144351 611.84 967 939 234.4

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter